149521336897 has 2 divisors, whose sum is σ = 149521336898. Its totient is φ = 149521336896.

The previous prime is 149521336883. The next prime is 149521336967. The reversal of 149521336897 is 798633125941.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149304187201 + 217149696 = 386399^2 + 14736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149521336897 is a prime.

It is not a weakly prime, because it can be changed into another prime (149521336837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74760668448 + 74760668449.

It is an arithmetic number, because the mean of its divisors is an integer number (74760668449).

Almost surely, 2^149521336897 is an apocalyptic number.

It is an amenable number.

149521336897 is a deficient number, since it is larger than the sum of its proper divisors (1).

149521336897 is an equidigital number, since it uses as much as digits as its factorization.

149521336897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 58.

The spelling of 149521336897 in words is "one hundred forty-nine billion, five hundred twenty-one million, three hundred thirty-six thousand, eight hundred ninety-seven".